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IMPROVEMENT' IN PIPE GOUPLINGS.

EDWARD DUFFEE, OF HAVERHILL, MASSACHUSETTS, ASSIGN OR TO HIM- SELF AND .GEORGE APPLETON, OF SAME PLACE.

Letters Patent No. 59,982, dated Nvemter 27, 1866".

SPIE] CIFICAI--N- TO ALL PERSONS TO 4WHOM .THESE PRESENTS SHALL COME:

Be it known that I, EDWARD DUFFEE, of Haverhill, in` the county of Essex, and State of Massachusetts," have invented anew and useful Improvement in Pipe Joints; -and do hereby declare the same to be fully described i in the following specification, and represented in the accompanying drawings, of which- Figure 1 is an external view; and

Figure 2 is a longitudinalsection ofy two 4pipes connected by my improved joint.

Figure 3 is a side view of the male part of the joint. Y

The improved joint is specially designed for gas or water pipes, t

In the drawings, A and B are two pipes formed with .and connected by such joint, which is likea common and we1l-known water-pipe joint, with .the addition not only of a filling opening, d, but of a stopping-ange, a; the latter projecting from and going around the pipe B, and being arranged to enter the month of' theisockethead, c, of the pipe, A, and so as to stop the cement-receiving space, b, which circumscrihes the pipe,- B, and is inclu'ded between it and the socket part, c, of the pipe, A. The opening, cZ, may be provided with a tunnel o1"` mouth, e. The pipe, B, at its end which enters the socket-head, cis to have a flange, j, going iaround it. Each pipe is to he constructed with a socket-head, c, at one end, and with anges, a f, at its other end, the sockethead being formed and the angcs being arranged with respect to each other as represented in the drawings. t

The annular space, 6, betweenthe pipes, and Within the joint after one pipe may have been introduced into the other, is to be iilled with cement which may be poured into or through the hole, d. A joint so made will Vbe much stronger than the common joint, which is like the improved joint except in having the illing-hole, al, and the additional iiange, a. The said ange, a, by its co-operation with the ange, f, serves to support the two pipes or prevent them from sagging and breaking or injuring the cement.

What I claim, is the new or improved pipe joint, consistingof the opening d, and the auxiliaryange a, the main ange f, and the socket-head c, arranged and applied to the pipes A and B, as set forth.

n EDWARD DUFFEE.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

